It is a 20lb standard Propane tank, with a flex line like would be used for a standard hookup to a Propane grill, or turkey fry setup. That flex line does have a regulator, but it is not adjustable.
From the tank:
Flexible line as described above, to a gas shutoff valve(this step was required in order to get to a standard thread for copper) then it is soldered 1/2" copper run that has a T. That feeds burner 1, there is a standard brass shut off valve and a series of step down threads to match the burner hole pattern then the burner. The run to burner one is about 8" long from the gas shut off. Burner2: From the T, it continues in copper for 40", then a copper 90, then a standard brass shut off and series of threads to step down to the burner. How do I add photos?